JPS59114059A - Transfer table for thermal transfer equipment - Google Patents
Transfer table for thermal transfer equipmentInfo
- Publication number
- JPS59114059A JPS59114059A JP22361282A JP22361282A JPS59114059A JP S59114059 A JPS59114059 A JP S59114059A JP 22361282 A JP22361282 A JP 22361282A JP 22361282 A JP22361282 A JP 22361282A JP S59114059 A JPS59114059 A JP S59114059A
- Authority
- JP
- Japan
- Prior art keywords
- pressure plate
- transfer
- heat
- conductive
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
- B41F1/26—Details
- B41F1/38—Platens or type-beds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Induction Heating (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、熱転写機に装備される転写盤の改良、特に
この転写盤の加熱方式に関する改良に係り、該盤の押圧
側を効率よく迅速に加熱可能ならしめんとするものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a transfer plate installed in a thermal transfer machine, and in particular to an improvement regarding the heating method of the transfer plate, and an improvement in which the pressing side of the plate can be heated efficiently and quickly. It is something to do.
ところで、フィルムベースの片側に転写箔カ重合された
転写フィルムを用いて一該フィルムヲ転写対象物品の表
面へ加熱しつつ押圧せしめ、もってこの物品表面へ上記
の転写箔を転着させるように構成された熱転写機に於て
は、その転写フィルムを加熱せしめる必要上、該フィル
ムを押圧するための転写盤も予め所要温度Kまで加熱さ
れていなければならない。By the way, a transfer film having a transfer foil polymerized on one side of a film base is used, and the film is heated and pressed onto the surface of an object to be transferred, thereby transferring the transfer foil to the surface of the object. In such a thermal transfer machine, since it is necessary to heat the transfer film, the transfer plate for pressing the film must also be heated to a required temperature K in advance.
そこで従来の転写盤は、第1図に例示す石如く。Therefore, the conventional transfer plate is like a stone as shown in FIG.
プレス軸lの先端に支持される内部中実な金属製の盤本
体2と該本体の抑圧側へ添わせて固着される圧板3とか
らな抄、この圧板3を上記の盤本体2に内蔵させたヒー
タ4で加熱せしめるような方式が採用されでいる。An internal solid metal plate body 2 supported at the tip of a press shaft l, and a pressure plate 3 fixed to the pressing side of the body, this pressure plate 3 is built into the plate body 2. A method is adopted in which heating is performed using a heated heater 4.
然し乍らかかる従来の加熱方式には1次のような問題点
がみられる。即ちこの加熱方式では、ます熱容希の大き
な盤本体2をヒータ4で充分に予熱しておく必要がある
とと、盤本体2から周囲への無駄な放熱が多いためヒー
タ4から与えられた熱量のすべてを圧板3の加熱に有効
に%’l用し得ないとと、然もヒータ4から圧板3への
熱量供給を熱伝導に頼っているため、防板への熱の伝わ
り方が遅いとと、などの不都合がみられて、圧板3の効
率よい迅速な加熱が行かえず、従って転写作業の開始時
にけ一圧板3の押圧面3aを所要温度まで予熱するのに
時間がかかり過ぎ、転写作業中に於ても、各転方向ごと
に低下する押圧面3aの温度の回復に矢張り時間がかか
り過ぎる。才たこの加熱方式では、上記したように圧板
3を効率よく加熱できかいため、押圧面3aを所要温度
に保たせようとすれば、盤本体2をそれ以上の温度に保
っておく必要があり、従ってその分だけヒータ4の出力
を大きくしなければ彦らないため、前記した熱帯の放熱
等による浪費と相俟って、該ヒータの電力消*号が非常
に多い。加えてこの加熱方式では、圧板3の加熱を盤本
体2からの熱伝導に依存しているため、抑圧面3aの温
度が不安定であり、従って核部の温度管理が非常に面倒
である。However, the conventional heating method has the following problems. In other words, with this heating method, it is necessary to sufficiently preheat the panel body 2, which has a large heat capacity, with the heater 4, and because there is a lot of wasteful heat radiation from the panel body 2 to the surroundings, All of the heat cannot be used effectively to heat the pressure plate 3, and since the supply of heat from the heater 4 to the pressure plate 3 relies on thermal conduction, the way the heat is transferred to the shield plate is limited. There are disadvantages such as slow heating, making it impossible to efficiently and quickly heat the pressure plate 3. Therefore, it takes time to preheat the pressing surface 3a of the pressure plate 3 to the required temperature at the start of the transfer operation. Even during the transfer operation, it takes too much time to recover the temperature of the pressing surface 3a, which decreases with each direction of rotation. With this heating method, the pressure plate 3 cannot be heated efficiently as described above, so if the pressure surface 3a is to be kept at the required temperature, the plate body 2 must be kept at a higher temperature. Therefore, the output of the heater 4 has to be increased by that amount in order for the heater to cool down, and together with the above-mentioned waste due to heat radiation in the tropics, the power consumption of the heater is very large. In addition, in this heating method, since heating of the pressure plate 3 depends on heat conduction from the plate body 2, the temperature of the suppressing surface 3a is unstable, and therefore, temperature control of the core portion is extremely troublesome.
更にこの加熱方式では、転写作業中の盤本体2が常時加
熱されているため、誤って接触した作業員に火傷を負わ
せる危険性や1周囲への熱輻射で作業環境を悪くする懸
念があるほか、プレス軸1への熱伝導に伴々う該軸の熱
膨張に起因した軸長変化によって、転写フィルム5を転
写対象物品6の表面へ押圧せしめるときの転写圧力に変
動を来たす虞れもある。一方、上記の転写フィルム5と
しては長尺のものが使用され、これが適当な張力のもと
で緊張させられ乍ら、所要長さずつ間欠的に圧板3と物
品6との間へ供給せしめられるが、上記した加熱方式の
もとに於ては、転写時における該フィルムの次回に使用
されるべき部分までが盤本体2からの輻射熱で加熱され
て、好ましくない伸びや長さ方向の皺が生じるのを避は
難いため。Furthermore, with this heating method, the board body 2 is constantly heated during the transfer process, so there is a risk of burns to workers who accidentally come into contact with it, and there are concerns that heat radiation to the surrounding area may worsen the work environment. In addition, changes in the axial length due to thermal expansion of the press shaft 1 due to heat conduction to the press shaft 1 may cause fluctuations in the transfer pressure when pressing the transfer film 5 against the surface of the object 6 to be transferred. be. On the other hand, a long film is used as the transfer film 5, and while it is stretched under an appropriate tension, it is intermittently fed between the pressure plate 3 and the article 6 in required lengths. However, under the heating method described above, the part of the film to be used next time during transfer is heated by radiant heat from the board body 2, and undesirable elongation and wrinkles in the longitudinal direction are prevented. Because it is difficult to avoid it happening.
次回の転写に際しては、その特定し難い伸びによって、
転写すべき図柄の位置決めに手数がかかり一且つまた皺
の生じた部分を使用し得すしてフィルム使用骨の無駄が
非常に多い。然もこのような転写フィルム5の好ましく
ない伸びや皺に伴なう問題点は、圧板3の抑圧面積が盤
本体2の大きさに比べて小さくなるほど顕著に現われる
ため、転写フィルム5の使用量は、圧板3の抑圧面積、
従って転写面積の大小に拘らず殆ど同じでおるという不
都合を招く。During the next transfer, due to the elongation that is difficult to specify,
It takes time and effort to position the pattern to be transferred, and the wrinkled area cannot be used, resulting in a large amount of wasted film. However, problems associated with such undesirable elongation and wrinkles of the transfer film 5 become more noticeable as the suppression area of the pressure plate 3 becomes smaller compared to the size of the plate body 2. is the suppression area of the pressure plate 3,
Therefore, the transfer area is almost the same regardless of its size, which causes the inconvenience.
本発明は、転写盤に関する上記したような従来の問題点
に対り1.シて、該盤の抑圧側へ取り付けられた圧板だ
けを効率よく然も迅速に加熱可能ならしめるため、電磁
誘導による加熱方式を採用し。The present invention solves the above-mentioned conventional problems regarding transfer plates. In order to efficiently and quickly heat only the pressure plate attached to the suppression side of the panel, we adopted a heating method using electromagnetic induction.
導電性をもたせた圧板が自己発熱するようにしたもので
ある。以下これを第2図及び第3図に示す実施例につい
て詳述する。The conductive pressure plate generates heat by itself. This will be described in detail below with reference to the embodiment shown in FIGS. 2 and 3.
図における11は公知の手段により矢印(イ)方向へ随
時昇降させられるプレス軸であって、その先端には盤本
体12が支持されている。この盤本体12は、押圧側で
開放された内部中空な筐体12aと、その開放された抑
圧側を閉鎖する押圧基板12bとで形成されており、該
板の外面には圧板13が添わされ交換可能に固着されて
いる。かかる盤本体12の内部空間には、上記圧板13
を加熱するための誘導コイル14が、抑圧基板12bの
内面へできるだけ接近させて設置され1発生する磁界を
圧板13へ集中的に及ぼしめ得るよう配慮されている。Reference numeral 11 in the figure denotes a press shaft which can be raised and lowered at any time in the direction of arrow (A) by known means, and a plate body 12 is supported at its tip. This board body 12 is formed of an internal hollow housing 12a that is open on the pressing side, and a pressing board 12b that closes the open pressing side, and a pressing plate 13 is attached to the outer surface of the board. Fixed and replaceable. The pressure plate 13 is provided in the internal space of the panel body 12.
An induction coil 14 for heating the pressure plate 13 is installed as close as possible to the inner surface of the suppression board 12b so that the generated magnetic field can be concentratedly applied to the pressure plate 13.
従って抑圧基板12aは、上記した磁界の影響を受ける
ととがなくて機械的強度が大々る素材1例えばセラミッ
ク等のような導電性を持たガい硬質断熱材で作られ、圧
板13け、磁界の影響を受は易い導電性ある素材1例え
ば金属、好ましくは鉄系の強磁性材で作られている本の
とする。またとの圧板13は、長尺の転写フィルム15
を介して対向する転写対象物品16の表面積に応じた抑
圧面積をもち、従って第3図に示す如く。Therefore, the suppression board 12a is made of a material 1 that is not susceptible to the influence of the magnetic field described above and has great mechanical strength, for example, a conductive hard insulating material such as ceramic, and is made of a pressure plate 13, A book is made of a conductive material 1 that is easily affected by a magnetic field, such as a metal, preferably a ferromagnetic material such as iron. Also, the pressure plate 13 is a long transfer film 15
It has a suppression area corresponding to the surface area of the transfer target article 16 which faces the transfer object 16 via the transfer object, as shown in FIG.
表面積の小なる物品16′に対しては抑圧面積の小なる
圧板13′が使用される。いずれにしても圧板13外い
し13′の押圧面13aは、上記物品16の表面へ部分
的な転写を施そうとする場合には図例のようか凸版形状
とされ、その表面全面への転写を施そうとする場合には
平版形状とされる。なお前記の誘導コイル14は、コン
トロー/L’回IU’/で制御されるドライブ回路18
を介して高周波発生源19へ接続され、圧板13を所要
温度オで加熱するに必要ff、−3’lHの高周波電力
が9そのコイル]4へ随時供給されるようになっている
。For articles 16' with a small surface area, a pressure plate 13' with a small suppression area is used. In any case, the pressing surface 13a of the pressure plate 13 outer block 13' is shaped like a relief plate as shown in the figure when partial transfer is to be performed on the surface of the article 16, and the press surface 13a of the pressure plate 13 is formed into a letterpress shape as shown in the illustration. When it is intended to be applied, a planar shape is used. Note that the induction coil 14 is controlled by a drive circuit 18 controlled by a controller /L'times IU'/
is connected to the high frequency generation source 19 via the coil 9, and the high frequency power of ff, -3'lH necessary for heating the pressure plate 13 to the required temperature is supplied to the coil 4 at any time.
上記した構成に於て、誘導コイル14へ高周波電流が流
されると、該コイルは交番磁界を発生する。この磁界は
、導電性を有しない押圧基板12bにけ何ら作用しない
で、これを透過し、導電性ある圧板]3にのみ作用して
、その圧板中へ該磁界の変化に応じた誘導電流を誘起せ
しめる。従って圧板13は、これだけが、主としてその
誘導電流のオーム損にシー:づいた発熱により加熱され
、且つその熱量は、断熱性ある抑圧基板12bで遮られ
て、押圧面13aへ無駄ガく集中される。In the above configuration, when a high frequency current is passed through the induction coil 14, the coil generates an alternating magnetic field. This magnetic field passes through the non-conductive pressure plate 12b without acting on it, acts only on the conductive pressure plate 3, and induces an induced current in the pressure plate according to the change in the magnetic field. induce Therefore, the pressure plate 13 alone is heated mainly by the heat generated by the ohmic loss of the induced current, and the amount of heat is blocked by the heat-insulating suppressing substrate 12b and is wastedly concentrated on the pressing surface 13a. Ru.
然して上記したようか電磁誘導加熱は、前記従来例のヒ
ータ4を使用した熱伝導による加熱と比べて熱効率が非
常に高いため、圧板13の温度を急速に上昇させること
ができる。才たとの場合に加熱されるのけ、転写盤全体
のなかで圧板13だけであるが、この圧板13は、前記
従来例で加熱される盤本体2に比べれば熱容量が遥かに
小であるため、所要温度寸で加熱するに必要な熱量が遥
かに少なくて済む。然もとの圧板13は、自らの発熱に
よって直接的に加熱されるため、前記従来例におけるよ
うな盤本体2からの熱伝導に依る間接的な加熱と異なっ
て1時間的な遅れを件なわ表い。よって転写作業の開始
に際しては、圧板13を数秒以内の僅かな時間で容易に
所要温度寸で加熱せしめ得るため、従来必要とされてい
た予熱が不要となシ、各転写回ごとに於ても、圧板13
の転写によシ低下した温度を僅かが時間で回復させ得る
ため、各転写目間の時間的間隔が数秒以上あれば、圧板
13の加熱を各転写回の開始直前にだけ行なえばよくて
、防板を常時加熱し続ける必要が特に々い。However, as described above, electromagnetic induction heating has much higher thermal efficiency than heating by thermal conduction using the conventional heater 4, and therefore can rapidly increase the temperature of the pressure plate 13. Only the pressure plate 13 in the entire transfer plate is heated when the plate is heated, but this pressure plate 13 has a much smaller heat capacity than the plate body 2, which is heated in the conventional example. , much less heat is required to heat the material to the required temperature. However, since the pressure plate 13 is directly heated by its own heat generation, there is a delay of about one hour, unlike indirect heating due to heat conduction from the plate body 2 as in the conventional example. Table. Therefore, when starting the transfer operation, the pressure plate 13 can be easily heated to the required temperature within a few seconds, so there is no need for preheating, which was required in the past. , pressure plate 13
Since the temperature that has decreased due to the transfer can be recovered in a small amount of time, if the time interval between each transfer is several seconds or more, it is only necessary to heat the pressure plate 13 just before the start of each transfer. It is especially necessary to keep the shield plate constantly heated.
また、このようか電磁誘導加熱によれば、圧板13に−
1見られた熱量の殆どすべてを転写にだけ有効に費し得
て1周囲への輻射による無駄な放熱が僅かであるため、
上記した効率の良い加熱と相俟って、その加熱に要する
電力量を前記従来例よりも大巾に削減でき、然も圧板押
圧面13aの温度管理については、放熱などの不安定要
素を殆ど考慮しなくて済むため、誘導コイル14への電
力供給量の制御によって抑圧面温度の調整が容易に行な
え゛1手数がかからない。Moreover, according to this electromagnetic induction heating, the pressure plate 13 has −
1.Almost all of the observed heat can be effectively used only for transfer, 1.There is only a small amount of wasted heat dissipated by radiation to the surroundings.
Coupled with the above-mentioned efficient heating, the amount of electricity required for heating can be significantly reduced compared to the conventional example, and with regard to temperature control of the pressure plate pressing surface 13a, unstable factors such as heat radiation can be almost eliminated. Since there is no need to take this into account, the suppression surface temperature can be easily adjusted by controlling the amount of power supplied to the induction coil 14, and does not require any effort.
更に上記した電磁誘導加熱では、圧板13だけが加熱さ
れ一防板から盤本体]2への熱伝導が抑圧基板12bで
遮断されるため その盤本体12へ誤って接帥した作業
量に火傷を負わせる危険性がなく、該本体から周囲への
熱輻射がみられないため熱的な作票環境の悪化が回避で
きるほか、プレス軸11の熱膨張を伴なわないので転写
圧力に皆勤を来たす虞れがない。Furthermore, in the above-mentioned electromagnetic induction heating, only the pressure plate 13 is heated and the heat conduction from the first shield plate to the panel body 2 is blocked by the suppression board 12b. Since there is no danger of inflicting damage, and no heat radiation is seen from the main body to the surroundings, deterioration of the thermal printing environment can be avoided, and since there is no thermal expansion of the press shaft 11, full transfer pressure is achieved. There is no danger.
一方、前記した長尺の転写フィルム15は、従来と同様
に適%fx張力のもとで緊張させられ乍ら、所要長さず
つ間欠的に圧板13と物品16との間へ供給されるが、
盤本体12からの熱輻射が力いので、転写時における上
記フィルムの次回に使用されるべき部分までが加熱され
ることはなく、従って該部分に好ましくかい伸びや皺を
生じさせることがかい。このため次回の転写時における
転写すべき図柄の位置決めが容易であり、且つまたフィ
ルム使用骨の無駄がなくて、1回の使用量を圧板13の
押圧面積にほぼ等しく抑えることができ。On the other hand, the above-mentioned long transfer film 15 is intermittently supplied between the pressure plate 13 and the article 16 at a required length while being stretched under an appropriate % fx tension as in the conventional case. ,
Since the heat radiation from the disk body 12 is strong, the portion of the film to be used next time is not heated during transfer, and therefore, it is possible to cause the portion to stretch or wrinkle as desired. Therefore, it is easy to position the pattern to be transferred at the time of the next transfer, and there is no waste of the film used, and the amount used at one time can be kept almost equal to the pressing area of the pressure plate 13.
従って第2図に示した圧板13よりも第3図に示した圧
板13′の方が、その使用量は当然少なくな石。Therefore, the amount of stones used in the pressure plate 13' shown in FIG. 3 is naturally smaller than that of the pressure plate 13 shown in FIG. 2.
以上の如く1本発明は内部中空か盤本体の抑圧側を導電
性のかい硬質断熱材からなる抑圧基板で構成して、該基
板の外面に導電性ある圧板を取沙付け、上記盤本体内部
の誘導コイルで生ぜしめられた交番磁界をその圧板に及
ぼしめて、該圧板を電磁誘導作用で自己発熱させるよう
にしたものである。従ってこのような本発明によれば、
盤本体に内蔵したヒータからの熱伝導を利用する従来例
に比べ、圧板を効率よく迅速に加熱し得て、転写作業開
始時の予熱を不要とがし且つ各転写回ごとの温度回復所
要時間を短縮し得るため、転写作業の大巾な能率化を実
現させることができ、また無駄な放熱がないため、上記
した圧板の効率よ−)加熱と相俟って電力消費量を削減
し得ると共に、転写フィルムの使用量の無駄を回避し得
て、転写コストの大巾な引下げを実現させることができ
、更には圧板押圧面の温度管理が容易〒転写圧力の変動
がなく、且つ転写フィルムの図柄の位置合せが容易なた
め、常に良好な転写を実現させることができ、然も火傷
の危険性や周囲への不必要外熱輻射を回避し得るため一
転写作業の安全性や良好カ作業環境を確保できる。As described above, one aspect of the present invention is to construct the suppressing side of the internal hollow disk body with a suppressing substrate made of a conductive hard heat insulating material, and attaching a conductive pressure plate to the outer surface of the substrate. An alternating magnetic field generated by an induction coil is applied to the pressure plate to cause the pressure plate to self-heat by electromagnetic induction. Therefore, according to the present invention,
Compared to the conventional method that uses heat conduction from a heater built into the disk body, the pressure plate can be heated efficiently and quickly, eliminating the need for preheating at the start of transfer work, and reducing the time required for temperature recovery for each transfer. This makes it possible to significantly improve the efficiency of the transfer work, and since there is no wasteful heat radiation, power consumption can be reduced in conjunction with the above-mentioned efficiency of the pressure plate and heating. At the same time, it is possible to avoid wasting the amount of transfer film used, and it is possible to achieve a significant reduction in transfer costs.Furthermore, it is easy to control the temperature of the pressing surface of the pressure plate.There is no fluctuation in transfer pressure, and transfer film Because it is easy to align the design, it is possible to always achieve good transfer, and it is possible to avoid the risk of burns and unnecessary external heat radiation to the surrounding area, which improves the safety and good quality of transfer work. A work environment can be secured.
第1図は従来例を示す正面図、第2図は本発明の実施例
を示十一部欠截正面図、第3図は他の実施例を示す正面
図である。
11・・・プレス軸、12−盤本体、l 2. b・−
押圧基板、13−・圧板−14−・誘導コイル、15−
・転写フィルム、16−・転写対象物品、19・−高周
波発生源
出願人 大平工業株式会社
堕自/(賃召
’−E一−]FIG. 1 is a front view showing a conventional example, FIG. 2 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 3 is a front view showing another embodiment. 11...Press shaft, 12-Panel body, l2. b・-
Press board, 13-, pressure plate-14-, induction coil, 15-
-Transfer film, 16--Article to be transferred, 19--High frequency source Applicant Ohira Kogyo Co., Ltd. Fallen/(Rental'-E1-)
Claims (1)
質断熱材からなる押圧基板で構成されて。 該基板の外面に導電性をもたせた圧板が取シ付けられ、
上記盤本体の内部空間には、その圧板へ交番磁界を及ぼ
しめるための高周波発生源に接続された誘導コイルが、
上記抑圧基板の内面に接近させて設置されていることを
特徴とする熱転写機の転写盤。(1) The suppressing side of the internally hollow board body is composed of a pressing board made of a hard heat insulating material with no conductivity. A conductive pressure plate is attached to the outer surface of the substrate,
In the internal space of the panel body, there is an induction coil connected to a high frequency source for applying an alternating magnetic field to the pressure plate.
A transfer plate of a thermal transfer machine, characterized in that the transfer plate is installed close to the inner surface of the suppression substrate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22361282A JPS59114059A (en) | 1982-12-20 | 1982-12-20 | Transfer table for thermal transfer equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22361282A JPS59114059A (en) | 1982-12-20 | 1982-12-20 | Transfer table for thermal transfer equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59114059A true JPS59114059A (en) | 1984-06-30 |
Family
ID=16800920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22361282A Pending JPS59114059A (en) | 1982-12-20 | 1982-12-20 | Transfer table for thermal transfer equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59114059A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003024175A (en) * | 2001-07-13 | 2003-01-28 | Itoki Co Ltd | Support mechanism for backrest of chair |
WO2011069350A1 (en) * | 2009-12-10 | 2011-06-16 | Wu Dongjie | Bronzing roller |
CN104417039A (en) * | 2013-09-11 | 2015-03-18 | 南通希罗精密机械科技有限公司 | Electromagnetic induction digital control heating device |
-
1982
- 1982-12-20 JP JP22361282A patent/JPS59114059A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003024175A (en) * | 2001-07-13 | 2003-01-28 | Itoki Co Ltd | Support mechanism for backrest of chair |
WO2011069350A1 (en) * | 2009-12-10 | 2011-06-16 | Wu Dongjie | Bronzing roller |
CN104417039A (en) * | 2013-09-11 | 2015-03-18 | 南通希罗精密机械科技有限公司 | Electromagnetic induction digital control heating device |
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